Extracting device



Aug. 17, 1943. H. A. AABERG ET AL EXTRACTING DEVICE Filed March 29, 1943d W 1 E w w wuE AH 3 W M W 2 ma Tnw. m H r M m 5 7 w, a M 2 drawing.

Patented Aug. 17, 1943 sx'raaorme DEVIQE' "Harris A, Aaberg;"Bensondlviinm, x and Joe 7 Reward;"Three Oaks, Mich.

Applicationlltiarch 29,;19fipSerialNo. 48.1);9525

'QCI-ziirns, (ores-casi- (Granted under the act or March *3, 1883,"as

. .amendedAprilSfl, 1928;37002-(3. 757-) j 'Th'ejinventic-ndescribedlhereinmay be manufactured and used by or for-thejG'ov'ernmentior govei'nnientai purposes without the. payment .to

us 7 any royalty thereon.

This oinventionrelates' to, a device .ior extractingoor removing.pins',bo -ts.and .the like,a nd is especially .adapte'dto-removesuchelements from inaccessible'places and machine parts. Merely- 3 wayofillustrationtheimproved "tool of this invention isfshown in connectionfwith the extracting oi the rockershaft.v (stud) .from-itsposition inthecylinder head oi an internal cornbustion engine.

Figure l:v shows the improved too 1 -in position for extracting.therocker shaft, only afragmentary portion of the cylinder head castingappearin; and i Figure 2 andFigureS are crosssections takenrespectively, on lines 2--2- and 3'--3 'of. Figure I.

. In the accompanying sheet of I .H pnshinghthecshaitor :pin-Lin-the'same ('leftftheu-distance-between distal edge of sachet mouth 33 andthereduced portion tlof the short leg'ii, ,in. accordance with the workwhich the toel gis .lrequired to-f'perform. {the example illustrated. inFigure l thisfdistance would be somewhat greater than the distancebetween the threadedendntdl) :of shaft or pin I andits head 3, .to.enable the.tooLtogbeapplied with the, longitudinal axisof; shaftfl -inalignment with the longitudinalaxis throughshort'rod 2iland short leghi. 'Ihe.shortrr od isthen' turned by using a -rnonkey .orjsocket-wrench' or the ;like;;to its fiat surfaces '2] togadva nce the thimblefi-ifi towardsth'e wort;v and to;..,abut its :distal edges against-thecylinder. head roasting '5. Further turning lwill now causethe .J-shapedrod lllftoy advance toward the crossepiecle v i 5; -its short legwardFigure: L.) ;.dir,ection.; It.:shouldbe.;;,noted he rockersshaibfiorstud) -is shown-in Fig-i ure lfaspassing throughssuitable iholes in-,the

cylinder head .casting .5. The rock?! ashaft l .is

shown as being. hollow, although so farasyconcerns the application oftheimproved device it would-sufficedf merely a recess (designated 2) wereprovided at one end of the shaft. ZThe rocker shaft l, which servestoprovide abearing for the rocker 6, is provided with means for preeventing axial movement of the shaft, such as a flanged head-3 (at itsleft end, as viewed in Figure 1) and a thread (right) end 4 to receive anut (not shown) The improved tool is in theiforrn'o f an ,elon- I gatedJ-shaped rod I5, its short leg ll being provided at its end with areduced portion l2 adapted to be received in the. recess 2 .(or ho1-'low) of the rocker shaft. The end of its long leg I3 is threaded (at M)to receive a crosspiece 15 formed from two pieces (see Fig. 2) boltedtogether. (Hi) to be screwed on the said threads itof rod 10, and isbored (ii) to provide a bearing for a short rod 26 to which is providedwith a recessed portion 2?, Figure l; toreceive the said cross-piece i5.One end ofshort redid, is pro- 7 vided with suitable fiats toaccommodate a monkey or socket wrench; the other end of short 7 holealignable with the axis of the said short leg of the J-rod, the saidlong" leg being threaded, I a for screwing in the said tapped hole ofthe cross or;

' piece, a short rod disposed; in alignment with the.

said; axis of the short leg of th -J'-rodand pro- The cross-piece I5 istapped p shortrod passing through thefsaid bored hole of the saidcross-piece with the. said cross-piece held between the said'collars.against axial move- 1 1 mer t relative to the cross-piece; thesaidcrosspiece being constructed of two halves presenting matching facesthrough the diameters of the'saidrod 20 is threaded to receive a thimblemember i 30. socket opening 33 adapted to receive the flanged Thimblemember 39 is provided with a head 3 of the rocker shaft l '(or'a nut,ifthis were used in place ofthe flanged head) In using the improvedtool, the cross-piece l5 is turned in one direction orthe other toadjust the casting S as desg ihfid.

from.,Eig u1e iflthat sufficientyspace is left, in

adjusting theideviee to the work (by; turning the crosspiece I5; asdescribed ,;in the socket mouth fitlbetween the end of;the.-short.g;rod-20 and they V its-:headi) to,b.e received-1as=it,i pushed-out i '7 1. Ina device -foriremoving and-the, like Q having a head at oneendand acentered recess at the other end, the combination of an elongatedJ-shapedrod, the short leg of'which is provided:

with a reduced shoulder adapted'to b received in the said recessed endof thepin", a cross piece provided With a tapped-hole.inalignment,

with the long leg of the said J-rodand a bored vided with .a pair ofintegral collars-, the said tapped and boredhole and bolted together,

being'adaptedto accommodate a'tool, athimble 7 member the longitudinalaxis of which. is in I alignment with the said shortrod and alignablewith the said short leg of the J-rod and adaptedto be positioned betweenthe two, the' mouth of i I the thimble member facing the said short legof the J-rod and presenting a socket opening, the

closed end of the thimble member being tapped, and the proximal end ofthe short rod being threaded for screwing into the thimble member.

2. In a device for removing pins and the like having a head at one endand a-centered recess at the other end, the combination of an elongatedJ-shaped rod, the short leg of which is 7 member being tapped, and thproximal end of short leg of the J-rod andpassing through the said boredhole of the said cross-piece, the distal end of the short rod beingadapted to accommodate a tool, a thimble member the longitudinal axis ofwhich is in alignment with the said short rod and alignable with thesaid short'leg of the J-rod disposed between the two, the mouth of thethimble member being positionable to face'the said short leg of theJ-rod' and presenting a socket opening, the closed end of the thimblethe short rod being threaded for screwing into the thimble member.

fl. Ina device for removing pins and the like having a head at one end,the combination of an elongated J-shaped rod, a cross-piece providedwith a tapped hole in alignment with the 7 long legof the said J-rod anda bored hole alignof the J-rod and provided with a pair of inte gralcollars, the said short rod passing through the said bored hole of thesaidcross piece with the said'cross-piece held between the said collarsagainst axialmovernent' relativeto the crosspiece, the distal end of theshort rod being adapted to aceommod'atea tool, a thimble member inalignment with the said'short rod and the said short leg of the Jroddisposed between the two, the mouth of the thimble member beingpositionableto face the said short leg of the J-rod and presenting'asocket opening, the closed end of the thimble member being tapped,andthe proximal end of the short rod being threaded for screwing intothe thimble member.

3. In a device for removing pins and the -ke having a h ad at one endand'a centered recess at the other end, the combination of an elon-fgated J-shaped rod, :the short leg of Which is provided'with a reducedshoulder adapted to be received in the said recessed end of the pin, across piece provided with atapped hole in alignment with the longlegipfthe said J-rod and a bored hole alignable with the axis of thesaid shortleg of the J-rod, the said long leg being threaded forscrewingin the said tapped hole of thecross-piece, a short rod adaptedto bedisposed in alignment, withthe saidiaxisjof the,

V able with the axis of the short leg of the J-rod,

the said long leg being threaded for screwing in the said tappedhole ofthe crosspiec'e, a short rod adapted to be: disposed in alignment withthe said axis of the short leg of the J-rod and provided-with a pair ofintegral collars, the said shortro'd passinggthro-ugh the said boredhole of the said cross-piece with the said crosspiece held between thesaid collars against axial "movement relative tothe cross-piece, thesaid cross-piece beingfconstructed of two halves presenting matching'faces through the diameters of the said tapped and bored holes andbolted together," whereby the cross-piece may be positioned on the sameshort rod, the distal end of the short rod being adapted to accommodatea tool, a'thimble member the longitudinal axi of which is in alignmentwith the said short short leg of the J-rod, and adapted to be disposedbetween the two, the mouth of the thimble member being positionable toface the said short short leg of the J-rod andpresenting a socketopening', the closed end ofthe thimble member being member.

ior screwing into the thimble

